Investigation of Column-to-Floor Ratio for Seismic Safety of RC School Buildings in Taiwan
Date Issued
2011
Date
2011
Author(s)
Song, Jia-Cherng
Abstract
Because of the special geographical location in Taiwan, the earthquake occurred frequently, and some of serious cases like Chi-Chi Earthquake caused school buildings to suffer severe damage or collapse. In depth study for the reasons of damage, the classes were connected to the style of a long row which made the walls were too few to resist the lateral force. Otherwise, the column detailing often used non-ductile reinforced design. They all led the first floor of short columns to fail in shear failure along long row direction under earthquake.
Due to aforemetioned reason, the Ministry of Education commissioned National Center for Research on Earthquake Engineering (NCREE) to propose a procedure for enhancing the seismic capacities of school buildings. From 2009 to 2011 April, it had been uploaded by structural engineers to complete 4518 cases of seismic detailed assessment for school buildings.
Therefore, this research organized a large amount of accurate analysis in the database, screening the resembling of structural materials, system type for the RC school buildings, then finding their linear correlation by statistical regression between seismic performance and the vertical structural member’s amounts by defined column-to-floor ratio as the ratio of the total area of column at first floor to the total floor area above first floor. Besides, this research also considered the other influences of seismic capacity. For the brick wall contained structures, its amount can be transferred to the columns under the same shear strength, and then used this relationship to discuss with the seismic performance of school buildings. Finally the main results obtained in this research gave a rapid preliminary assessment formula of seismic capacity for the RC schools buildings, furthermore recommended the column-to-floor ratio for seismic safety in each region of Taiwan, and verified with recent research.
Subjects
seismic detailed assessment
RC school building
statistical regression
vertical structural member
column-to-floor ratio for seismic safety
Type
thesis
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